Backwash and Spread Effects

Every center of economic growth produces two kinds of effects on the regions that surround it. Spread effects carry benefits outward: demand for suppliers' goods, transfer of knowledge, expansion of markets, the rising tide that optimists celebrate. Backwash effects pull resources inward: talent migrates toward opportunity, capital flows toward higher returns, institutions adapt to serve the center's priorities rather than the periphery's needs. Myrdal's empirical finding, documented across multiple continents and decades, was that backwash tends to dominate in the absence of deliberate intervention. The AI economy replicates this dynamic at digital speed. Spread effects are visible — tools available to anyone with connectivity — while backwash effects operate through talent extraction, tool optimization toward center-priorities, and the capture of surplus by capital concentrated at the center.